# 演示多继承
class Phone:
    IMEI = None
    producer = "China"

    def call_by_4g(self):
        print("4g通话")


class NFCReader:
    nfc_type = "第五代"
    producer = "Huawei"

    def read_card(self):
        print("NFC读卡")

    def write_card(self):
        print("NFC写卡")


class RemoteControl:
    rc_type = "红卫遥控"

    def control(self):
        print("红卫遥控开启了")


class MyPhone(Phone, NFCReader, RemoteControl):
    pass


phone = MyPhone()
phone.call_by_4g()
phone.read_card()
phone.write_card()
phone.control()
